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Guaymas CSN
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2016
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Atlantis
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Project Title: |
Collaborative Research: Microbial carbon cycling and its interactions with sulfur and nitrogen transformations in Guaymas Basin hydrothermal sediments |
Project Status: |
Submitted |
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Principal Investigator: |
Andreas P. Teske, UNC_CH |
Project Institution: |
UNC_CH |
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Project ID: |
103998 |
Version #: |
1 |
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Date Submitted: |
8/13/2013 12:25:00 PM |
Created By: |
Andreas P. Teske |
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Date Last Modified: |
2/3/2015 2:45:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OCE/BIO - 1357238 - Funded |
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Summary of Field Work: |
We are planning to perform an integrated microbiological and geochemical study of hydrothermal sediments in Guaymas Basin. We are planning Alvin dives to the hydrothermal vent fields of Guaymas Basin (Southern trough) at 2000 m depth in the central Gulf of California. Alvin will recover sediment cores, microbial mats, and marine invertebrates from the hydrothermally heated sediments in the southern portion of Guaymas Basin. |
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Summary of Facility Requirements: |
We will need RV Atlantis and Alvin for video and photo surveys, temperature probe measurements of hydrothermal sediments, intrument deployment and sediment pushcore sampling. We may also need an elevator for pre-dive deployment and post-dive recovery of bulkier equipment or heavy core loads. We will bring long (24") coreliners for Alvin pushcoring; these have proven very effective for pushcoring hydrothermal and seep sediments on cruises AT15-56 and AT18-02, and they really raised the quality of work from this cruise.
Summary of other requirements and comments: |
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Summary of other requirements and comments: |
We generally prefer Alvin over ROVs. On the three prior cruises with Atlantis/Alvin in Guaymas Basin (in 1998, 2008 and 2009; 2000 m depth), and in the Gulf of Mexico (2010; 2300 - 600 m depth), sediment sampling and sample return with Alvin was speedy and effective. We know Guaymas Basin and our sampling sites quite well, and do not need to drive around much exploring and looking for good samples; the dive target positions are reliable and mapped out after two Guaymas cruises. Nighttime work (CCD water column sampling and profiling, elevator deployments, MUC coring) can be organized effectively around the Alvin dives. |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1006385 |
Created By: |
Andreas P. Teske |
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Date Last Modified: |
2/3/2015 2:45:00 PM |
Date Submitted: |
8/13/2013 12:25:00 PM |
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Year: |
2016
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Ship/Facility: |
Atlantis
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Optimum Start Date:
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2/1/2016 |
Dates to Avoid: |
Start and end dates are quite flexible; Ca. 12 months after the start of the funding period (Feb 1, 2014) would work best, but we are flexible. We can also delay spending funds if a ship time window opens up later in 2015. |
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Earliest Start Date: |
1/1/2016 |
Multi-Ship Op: |
No |
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Latest Start Date: |
5/1/2016 |
Other Ship(s): |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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12 |
1 |
1 |
2 |
16 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
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Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
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Short Description of Op Area
for use in schedules: |
Guaymas Basin |
| Description of Op Area: |
Guaymas Basin is the deepest part of the Guaymas spreading center in the central Gulf of California, ca. 2000 m deep. The area is hydrothermally active. The seafloor is covered with hydrothermally heated sediments; hydrothermal chimneys, sulfide mounds, microbial mats and vent fauna are abundant. The area is quite compact: On our previous cruises in 2008 and 2009, most dives were in an area of 500 x 500 m. A few hydrothermal features are farther off, but everything is within a radius of a few miles. |
| Op Area Size/Dia.: |
2 nautical miles |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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Ending
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Show Degrees Minutes |
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Foreign Clearance Required? |
Yes |
Coastal States:
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 Important Info on Foreign Research Clearances
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Are you or any member in your science party bringing in any science equipment items which are regulated for export by the International Traffic in Arms Regulations (ITAR) and/or the Export Administration Regulations (EAR)?
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No |
If yes, have you applied for the necessary permits through your export control office?
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No |
| Questions about ITAR/EAR regulations?
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Comments about foreign clearance requirements or
description of any other special permitting requirements
(e.g., MMPA, ESA, IHA, Marine Sanctuaries, etc.) |
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Requested Start Port |
Intermediate Port(s) |
Requested End Port |
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Guaymas, Mexico |
None |
Guaymas, Mexico |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
The cruise can start and end in Guaymas (Sonora) or in San Diego (CA); both ports would work at the start and end of the cruise. Guaymas is much closer to our field site in Guaymas Basin (5 hours transit) and easy for our Mexican collaborators. On the other hand, San Diego as the start and end port would facilitate shipping of samples and supplies by orders of magnitude (not easy and quite expensive in Guaymas). |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Andreas P. Teske, UNC_CH |
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# in Science Party |
1 |
# of different science teams |
1 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
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2 |
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Explanation of Science Party Requirements and Technician Requirements |
The projection for the science party is 18 to 20: A contingent of 6 to 8 from the University of North Carolina (Chapel Hill), 4 from the University of Georgia (Athens), 2 collaborators from the University of Southern Denmark, and 2 collaborators from the Max-Planck-Institute for marine Microbiology. Two Mexican observers have to be included, and 2 Science support technicians should be included (same as on previous cruises (AT14-40, AT15-56). The total of 18-20 still allows to take representatives of other cruise parties on board, to recover long-term experiments or samples (as done successfully on cruise AT15-56). |
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 Dynamic Positioning | ADCP | Multibeam | Seismic |
| Dredging/Coring/Large Dia. Trawl Wire | Stern A-frame | Fiber Optic (.681) | 0.680 Coax Wire |
| SCUBA Diving |  Radioisotope use - briefly describe | NO Radioisotope use/Natural level work | Other Operator Provided Inst. - Describe |
| 0 PI-Provided Vans - briefly describe | MOCNESS | | |
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Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling. |
A radioisotope van is needed for stable isotope work (13C, 15N) and radiotracer work (low-level beta emitters 14C, potentially 36S) for incubation and microbial rate measurement experiments using time-sensitive, fresh sediment samples.
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
A radioisotope van is needed for stable isotope work (13C, 15N) and radiotracer work (low-level beta emitters 14C, potentially 36S) for incubation and rate measurement experiments using time-sensitive samples. |
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